So that law enforcement can't access his data? What is his "business" area to be exact?

I love the irony of this comment being posted by an AC. Tell you what, post using your real name, address and phone number, and I'll tell you a dozen reasons why privacy, even from law enforcement, can be a legitimate business need.

Of course it can be impossible. Encrypt the data yourself, using a well-known, open-source, trusted and verified program, and keep the keys yourself. Dropbox can't decrypt anything then. Why anyone would trust them in the first place, especially a smart guy like Miguel, is beyond me.

Not even interview *skills*, but the intangibles mentioned in other threads here. Way back when I used to do the entry-level interviews, I'd tell people (not the ones I was interviewing) that the interview is generally over in about 10 seconds. Walk in, say "hello", shake hands, sit down, and in easily 80% of the cases it's over. The remaining half-hour is just for courtesy.